Department of Electronic Engineering, Tsinghua University
{leiyang, lilicao, ravenben, htzheng}@cs.ucsb.edu, hou-w05@mails.tsinghua.edu.cn
Abstract ­ With the advent of new FCC policies on
spectrum allocation for next generation wireless devices,
we have a rare opportunity to redesign spectrum access
protocols to support demanding, latency-sensitive appli-
cations such as high-def media streaming in home net-
works. Given their low tolerance for traffic delays and
disruptions, these applications are ill-suited for tradi-
tional, contention-based CSMA protocols.
In this paper, we explore an alternative approach to
spectrum access that relies on frequency-agile radios to
perform interference-free transmission across orthogonal
frequencies. We describe Jello, a MAC overlay where
devices sense and occupy unused spectrum without cen-